There are many excellent ReferenceR2R dacs out there in the $6k range from
Denafrips as well as Holo Springs , and delta sigma dacs like the Excellent T+A 200 dac. You possible May get 2-3% better possibly at $13k butimo that extra $7k
can be better spent on a very good Ethernet hub, Ethernet,and or usb cables
and as I always state Any wall wart to your router or elsewhere is adding noise to your system get rid of it ,the LSA -LPS power supply is by far the best unit under $1200 on Audiogon $700 and has a excellent DC cable most charge $150.